* {
  margin: 0;
  padding: 0;
}

html {
  animation: html 4s ease infinite;
}

.heart {
  width: 200px;
  height: 200px;
  background-color: #eb3f84;
  margin: 200px auto;
  position: relative;
  transform: rotate(45deg);
  animation: heart 4s ease infinite;
}

.heart::before {
  content: "";
  width: 200px;
  height: 200px;
  background-color: #eb3f84;
  border-radius: 50%;
  position: absolute;
  top: -100px;
  left: 0;
  animation: left 4s ease infinite;
  transition: all 1s ease;
}

.heart::after {
  content: "";
  width: 200px;
  height: 200px;
  background-color: #eb3f84;
  border-radius: 50%;
  position: absolute;
  left: 100px;
  top: 0;
  animation: right 4s ease infinite;
  transition: all 1s ease;
}

@keyframes html {
  0% {
    background-color: #eb3f84;
  }
  50% {
    background-color: #fff;
  }
  100% {
    background-color: #eb3f84;
  }
}

@keyframes heart {
  0% {
    transform: rotate(0deg);
    border-radius: 200px;
    background-color: #fff;
  }
  30% {
    transform: rotate(45deg);
    border-radius: 10px;
  }
  50% {
    background-color: #eb3f84;
  }
  70% {
    transform: rotate(45deg);
    border-radius: 10px;
  }
  100% {
    transform: rotate(90deg);
    border-radius: 200px;
    background-color: #fff;
  }
}

@keyframes left {
  0% {
    top: 0;
    background-color: #fff;
  }
  30% {
    top: -100px;
  }
  50% {
    background-color: #eb3f84;
  }
  70% {
    top: -100px;
  }
  100% {
    top: 0;
    background-attachment: #fff;
  }
}

@keyframes right {
  0% {
    left: 0;
    background-color: #fff;
  }
  30% {
    left: -100px;
  }
  50% {
    background-color: #eb3f84;
  }
  70% {
    left: -100px;
  }
  100% {
    left: 0;
    background-attachment: #fff;
  }
}
